Sound and heat insulation door leaf assembly
By designing the door frame of the hollow frame and the door leaf of the overlapping cavity, combined with the technology of filling foam materials, the problem of insufficient sound insulation and thermal insulation performance of traditional train doors is solved, and higher sound insulation and thermal insulation effects are achieved, and the strength of the door panels and door frames is enhanced.
Patent Information
- Application Number
- CN202422066939.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-26
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-08-26
AI Technical Summary
The sound insulation and thermal insulation performance of traditional train doors is insufficient. The area of the aluminum alloy profile veneer of the welded frame is large and the periphery of the door panel is thin, resulting in lack of sound insulation effect. The door frames of the hollow structure may generate stress concentration when they bear external forces, resulting in local deformation or damage.
A door frame with a hollow frame is designed, and the inner circumference side wall protrudes to form a limit inner frame. The door panel of the door leaf is equipped with eaves for overlapping on the limit inner frame. A cavity is provided inside the eaves, and high-performance foaming materials are filled in the door frame and door panels to improve sound insulation and thermal insulation performance.
By adding cavity structure and filling foaming materials, the sound insulation and thermal insulation performance of the door leaf is significantly improved, the strength of the door panel and door frame is enhanced, noise propagation and heat transfer are reduced, and the overall sound insulation and thermal insulation performance is improved.
Smart Images
Figure CN222892002U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a rail transit door, in particular to a sound insulation and heat insulation door and fan assembly. Background Art
[0002] The sound insulation and heat insulation performance of train doors is one of the train performance indicators. The door leaf structure of traditional doors is generally composed of an aluminum alloy profile welded frame bonded with inner and outer skins, with filling materials in the middle. The single plate area of the aluminum alloy profile of the welded frame is larger, and the door panel is thinner around, resulting in poor sound insulation effect; the door frame profile is a cavity structure, which may cause stress concentration when subjected to external force, resulting in local deformation or damage. Under high-frequency noise and extreme environmental climate, sound may be transmitted from the cavity to the interior of the car, and the heat transfer path increases, resulting in an overall decrease in the sound insulation and heat insulation performance of the door. Utility Model Content
[0003] Purpose of the utility model: The purpose of the utility model is to provide a sound-insulating door and fan assembly with improved heat and noise insulation performance.
[0004] Technical solution: The utility model describes a soundproof and heat-insulating door and fan assembly, comprising a door frame and a door leaf, wherein the door frame is a hollow frame, and the inner peripheral side walls of the door frame protrude to form a limiting inner frame; the door panels of the door leaf are provided with side eaves around them for overlapping the limiting inner frame, and a cavity is provided inside the side eaves.
[0005] The door frame is set as a hollow structure, and the internal cavity can be filled with high-performance foaming materials, so that the door frame improves the sound insulation and heat insulation performance. By setting a hollow structure at the edge of the eaves, the air insulation area is increased to improve the sound insulation and heat insulation performance of the door leaf. The combination of the two improves the sound insulation and heat insulation performance of the door leaf assembly.
[0006] Preferably, the door panel is spliced with L-shaped, hollow baffles around it to form an eave, and a first reinforcing rib supporting the corner of the baffle is provided in the cavity of the baffle.
[0007] Preferably, in order to improve the sealing performance of the door leaf, the end of the side eave and the inner side close to the limiting inner frame are provided with rubber strips. When the door leaf is closed, the rubber strip at the end of the side eave overlaps with the outer surface of the door frame, and the rubber strip on the inner side of the side eave abuts against the limiting inner frame.
[0008] Preferably, in order to avoid the edge of the rubber strip from warping and affecting the sealing performance, the outer surface of the door frame is inclined inward, and the rubber strip at the end has a first lip edge opposite to the inclination direction of the outer surface of the door frame. When the door leaf is closed, the first lip edge overlaps the inclined outer surface of the door frame.
[0009] Preferably, in order to ensure the sealing between the door panel and the limiting frame, the inner rubber strip has a "V"-shaped second lip, and when the door leaf is closed, the second lip abuts against the limiting inner frame.
[0010] Preferably, in order to improve the strength of the door panel, a first reinforcing rib supporting the corner of the baffle is provided in the cavity of the baffle.
[0011] Preferably, in order to improve the strength of the door frame, a second reinforcing rib for supporting the corner of the inner peripheral side wall is provided inside the door frame.
[0012] Preferably, the door frame is filled with foam material to further improve the sound insulation and heat insulation performance of the door panel and door leaf.
[0013] Beneficial effects: Compared with the prior art, the utility model has the following advantages: 1. Sound insulation and heat insulation performance: a cavity structure is added to the single-board area around the door panel to increase the air insulation area, thereby improving the sound insulation and heat insulation performance; 2. The strength of the door panel and door frame is guaranteed; 3. Performance improvement and lightweight: the use of materials to fill the hollow area can effectively make up for the problem of insufficient pressing in the profile threading process, improve the overall rigidity, and reduce the energy consumption caused by the convection of cold and hot air in the profile cavity, thereby weakening the propagation of sound. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the structure of the utility model in an assembled state;
[0015] Figure 2 This is a schematic diagram of the door leaf structure of the utility model;
[0016] Figure 3 This is a schematic diagram of the door frame structure of the utility model;
[0017] Figure 4 It is a partial structural schematic diagram of the top of the door leaf and door frame assembly of the utility model;
[0018] Figure 5 It is a partial structural schematic diagram of the bottom of the door leaf and door frame assembly of the utility model;
[0019] Figure 6 It is a schematic diagram of the partial structure of the rear side of the door leaf and door frame assembly of the present invention. DETAILED DESCRIPTION
[0020] The technical solution of the utility model is further described below in conjunction with the accompanying drawings.
[0021] like Figure 1 The utility model discloses a sound insulation and heat insulation door leaf assembly, the main structure of which includes a door leaf 2 and a door frame 3.
[0022] The side close to the inside of the vehicle body is the inner side, the side close to the passage formed by the door frame 3 is the inner periphery, and the side where the door leaf is provided with a rotating shaft or connected to a column is the rear side. Figure 3 , Figures 4 to 6The door frame 3 is a hollow rectangular frame, and the inner side wall is protruding to form a limit inner frame 306. The area enclosed by the limit inner frame 306 is reduced; the door frame 3 is formed by welding four hollow pressure strips at the top 302, the bottom 303, the front side 304, and the rear side 302. The outer periphery of the door frame 3 is connected to the vehicle body 1 through fasteners and coated with sealant; the outer surface of the door frame 3 is an inclined surface, which is inclined toward the center of the door frame 3 and the inner side of the vehicle body. A number of inclined wedges 305 (plastic parts) are provided on the front side of the door frame. When the door leaf 2 is closed, the inclined wedges 305 are located between the door panel and the door frame to buffer and reduce wear, avoid metal collision between the door panel and the door frame, improve adaptability and flexibility, and facilitate the adjustment of the small gap between the door panel and the door frame due to processing errors.
[0023] The inner peripheral side wall of the rear side 302 of the door frame 3 is protruding to form a reinforcing rib supporting the bent corner near the corner of the limiting inner frame 306. The reinforcing rib divides the internal cavity of the door frame 3 into several sub-cavities to improve the rigidity of the door frame 3. The top 301, bottom 303 and front side 304 of the door frame 3 can also be provided with the same reinforcing rib. The interior of the door frame 3 is filled with porous foam material 307 (not shown) to improve the sound insulation and heat insulation performance of the door frame 3.
[0024] like Figure 1 , Figure 2 , Figures 4 to 6 The door leaf 2 is connected to the load-bearing driving mechanism 4 through fasteners, and the load-bearing driving mechanism 4 is fixed on the top of the door frame. The door leaf 2 is driven to separate from the door frame 3 and move relative to the door frame 3 to form a passage for entering and exiting the vehicle, or the door leaf 2 is driven to be embedded in the door frame 3 to isolate the internal and external environment of the vehicle body.
[0025] The door leaf 2 is mainly composed of a door panel 201 , a glass 202 , a finger-protecting rubber strip 203 , a sealing rubber strip 204 , a peripheral rubber strip 205 , an upper lock buckle 206 , a middle lock buckle 207 , an isolation lock 208 , a lower lock buckle 209 , and a lower slide 210 .
[0026] The door panel 201 is spliced with an L-shaped baffle around its periphery. One side branch of the baffle is connected to the door panel, and the other side branch forms an edge eave 220 with a thickness less than that of the door panel 201 and can be overlapped on the limiting inner frame 306. The baffles around the door panel are respectively an upper baffle 211, a lower baffle 212, a front baffle 213, and a rear baffle 214; the two side branches of the upper baffle 211, the lower baffle 212, the front baffle 213, and the rear baffle 214 are provided with cavities inside, and the thickness of the cavity inside the side branch forming the edge eave 220 is not less than 2.5 mm, which is used to increase the air barrier layer to improve the sound insulation and heat insulation performance of the door panel itself. Reinforcing ribs are provided in the cavities at the corners of the upper baffle 211 and the rear baffle 214 to improve the strength of the upper baffle 211 and the rear baffle 214.
[0027] Finger-guarding rubber strip 203 and peripheral rubber strip 205 are installed at the end of front block 213; the ends of the other three sides, upper block 211, lower block 212, and rear block 214, are connected to peripheral rubber strip 205, and the side walls of peripheral rubber strip 205 and finger-guarding rubber strip 203 have lips inclined toward the inside of the vehicle (the inclination direction of the lips is opposite to the inclination direction of the outer inclined surface of the door frame 3), and the inner walls of upper block 211, lower block 212, and rear block 214 are equipped with rubber strip 204, and the rubber strip 204 has a "V"-shaped lip. When the door leaf 2 enters the door frame 3, the lip of the finger-guarding rubber strip 203 overlaps with the outer surface of the door frame 3, the lip of the peripheral rubber strip 205 overlaps with the outer inclined surface of the door frame 3, and the rubber strip 204 approaches the limiting inner frame 306 and is squeezed, and its V-shaped lip abuts against the side of the limiting inner frame 306 to form a seal. A reinforcement area may be provided in the cavity at the corner of the side branch of the upper section 211 away from the rubber strip 204 to ensure the bearing capacity of the door leaf 2.
[0028] The middle part of the door panel 201 is embedded with glass 202. The door panel 201 is bonded with the glass 202, the finger-protecting rubber strip 203, the rubber strip 204, and the peripheral rubber strip 205 by adhesive.
[0029] The rear side of the door panel 201 is provided with an upper lock buckle 206, a middle lock buckle 207, an isolation lock 208, a lower lock buckle 209 from top to bottom, and a horizontal lower slide 210 is provided at the bottom, and the lower slide 210 is connected to the door panel 201 through fasteners.
Claims
1. A sound insulation and heat insulation door leaf assembly, comprising a door frame (3) and a door leaf (2), characterized in that: The door frame (3) is a hollow frame, and the inner peripheral side wall of the door frame (3) is protruding to form a limiting inner frame (306); the door panel (201) of the door leaf is provided with a side eave (220) for overlapping the limiting inner frame (306) around it, and a cavity is provided inside the side eave (220).
2. The sound insulation door and fan assembly according to claim 1, characterized in that: The door panel (201) is spliced with L-shaped, hollow baffles around its periphery to form an edge eave (220).
3. The sound insulation door and fan assembly according to claim 2, characterized in that: A first reinforcing rib for supporting the corner of the baffle is arranged in the cavity of the baffle.
4. The sound insulation door and fan assembly according to claim 1, characterized in that: The end of the side eave (220) and the inner side close to the limiting inner frame (306) are both provided with rubber strips. When the door leaf is closed, the rubber strip at the end of the side eave (220) overlaps with the outer surface of the door frame, and the rubber strip on the inner side of the side eave abuts against the limiting inner frame.
5. The sound insulation door and fan assembly according to claim 1, characterized in that: The outer surface of the door frame (3) is inclined inwardly, and the rubber strip at the end of the edge eave (220) has a first lip edge in the opposite direction to the inclination direction of the outer surface of the door frame. When the door leaf is closed, the first lip edge overlaps the inclined outer surface of the door frame.
6. The sound insulation door and fan assembly according to claim 1, characterized in that: The rubber strip on the inner side of the edge eave (220) has a "V"-shaped second lip edge, and when the door leaf is closed, the second lip edge abuts against the limiting inner frame (306).
7. The sound insulation door and fan assembly according to claim 1, characterized in that: A second reinforcing rib for supporting the corner of the inner peripheral side wall is provided inside the door frame (3).
8. The sound insulation door and fan assembly according to claim 1, characterized in that: The interior of the door frame (3) is filled with foam material.